Windows Sever Backup to SMB error "THe username not recognized by local computer"

I don't have Windows 12 but on for my Windows 2008 server my back up software worked when when there is a user with the same name and password on both the Windows server and on the NAS box.  You can 1) create a backup service user on the server with a password that never expires and create the same user / password on the NAS; 2) add the name and password you are using on the Windows server as a NAS box; or 3) add the name / password that you log onto the NAS with as a user on the Windows server.     

Also the native Windows back up solution on my SBS2008 server wants a local drive to backup up to.  I believe a mapped drive would be accepted.   

YMMV but hope this helps.

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dannieboiz wrote:

I'm testing this with the built in Windows Server Backup 

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Not something I've tried (I use Acronis TrueImage, which has no problem backing up to the NAS).  The faq here says you'll need AD though: http://kb.netgear.com/app/answers/detail/a_id/29754

You could simply follow the guide (ignoring the AD requirement, but setting up a user account on the NAS that matches the username/password you use on the server).  Then use that account on the last step - and see what happens.  But I suspect that's basically what you did.

Two other approaches that I think will work around the AD requirement:  

-create an isci lun on the NAS for backup

-create a vhd on the NAS for backup

Both are conceptually equivalent - you end up with an NTFS-formatted virtual disk attached to the server either way. vhd is windows technology, so it might work out better.

Or of course use a different backup tool.